maybe skybox and TRANSLUCENT z-fight at multiCanvas

CesiumJS
1

1. i am doing multiCamera mode,this frame render normaly,but next frame,first i will change camera（i create it for another angle/view/direction to look ）and i will render the texture to RBO(i make a new fbo and new a Renderbuffer to be a colorAttachment ) when scene._fxaa.excute, and readPixels to create a IamgeData ,and call another 2d canvas's gl(WebGLContext2D).putIamgeDate() to display the another camera's picture.
   now,the z-fight appear in another canvas in translucent box and skybox,i don't know how to upload picture to show the sittuation. only word? who can tell me?

2. passState.framebuffer = scene.FBO_RBO;
   scene._fxaa.execute2(context, passState);
scene.renderbufferToOtherCanvas();

var FBO_RBO = new Framebuffer({
      context : this._context,
      colorRenderbuffers : [new Renderbuffer({
        context : this._context,
        width: width,
        height: height
      })]
    });

3. i want to do a multiCamera mode,and display the different picture to different canvas

4. i use cesium 1.43

my english is not too good,thanks to your read,thank you！best wish from china!

2

Hey, welcome to the Cesium community!

Uploading a picture will help. You can click the button between the highlight and the “Link” buttons in this forum’s input box, or you can upload the image on https://imgur.com/ and share the link here.

Can you put together a Sandcastle example of this issue? Just go to https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/, write your code, and then click “Share” and then paste the link you get from there here so I can run your example.

3

skybox_tranllucent_z-fight.jpg
skybox_tranllucent_z-fight.jpg1366×768 327 KB

i modify code in cesium source code not at sandcastle,i don’t write any code in sandcastle.i you need,i can send the cesium1.43 i has modified to your mailbox. thanks to your answer!

在 2018年10月25日星期四 UTC+8上午3:01:13，Omar Shehata写道：

4

Is it fixed if you turn off the ground atmosphere (https://cesiumjs.org/Cesium/Build/Documentation/Globe.html?classFilter=Globe#showGroundAtmosphere) ? And maybe turn off sky atmosphere in the viewer too just to make sure (https://cesiumjs.org/Cesium/Build/Documentation/Viewer.html?classFilter=Viewer).

It’s hard to really know what’s going on if you’ve modified the source. I think you might be able to do what you’re trying to do using the existing post process/frame buffer system. Here’s some articles that might help explain how the rendering engine works in Cesium:

Can you explain more about what you’re building? What are the multiple cameras for/what are you doing with the image data?